Consumer Loans Receivable (Details 3) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Mar. 31, 2012
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	$ 118,098	$ 119,539
Chattel Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	79,225
Chattel Loans Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	3,203
Chattel Loans Range One [Member] | Maximum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	619
Chattel Loans Range One [Member] | Minimum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	0
Chattel Loans Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	35,577
Chattel Loans Range Two [Member] | Maximum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	719
Chattel Loans Range Two [Member] | Minimum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	620
Chattel Loans Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	40,445
Chattel Loans Range Three [Member] | Maximum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	720
Conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	11,380
Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	309
Conforming Mortgages Range One [Member] | Maximum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	619
Conforming Mortgages Range One [Member] | Minimum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	0
Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	6,840
Conforming Mortgages Range Two [Member] | Maximum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	719
Conforming Mortgages Range Two [Member] | Minimum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	620
Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	4,231
Conforming Mortgages Range Three [Member] | Maximum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	720
Non-conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	27,476
Non Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	3,635
Non Conforming Mortgages Range One [Member] | Maximum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	619
Non Conforming Mortgages Range One [Member] | Minimum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	0
Non Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	15,098
Non Conforming Mortgages Range Two [Member] | Maximum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	719
Non Conforming Mortgages Range Two [Member] | Minimum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	620
Non Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	8,743
Non Conforming Mortgages Range Three [Member] | Maximum [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Asset class credit quality indicator	720
Other Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	17
Loans Securitized 2005 [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	50,035
Loans Securitized 2005 [Member] | Chattel Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	45,622
Loans Securitized 2005 [Member] | Chattel Loans Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	1,392
Loans Securitized 2005 [Member] | Chattel Loans Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	20,600
Loans Securitized 2005 [Member] | Chattel Loans Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	23,630
Loans Securitized 2005 [Member] | Conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Loans Securitized 2005 [Member] | Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Loans Securitized 2005 [Member] | Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Loans Securitized 2005 [Member] | Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Loans Securitized 2005 [Member] | Non-conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	4,413
Loans Securitized 2005 [Member] | Non Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	97
Loans Securitized 2005 [Member] | Non Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	2,127
Loans Securitized 2005 [Member] | Non Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	2,189
Loans Securitized 2005 [Member] | Other Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Loans Securitized 2007 [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	44,437
Loans Securitized 2007 [Member] | Chattel Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	30,807
Loans Securitized 2007 [Member] | Chattel Loans Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	896
Loans Securitized 2007 [Member] | Chattel Loans Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	13,829
Loans Securitized 2007 [Member] | Chattel Loans Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	16,082
Loans Securitized 2007 [Member] | Conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Loans Securitized 2007 [Member] | Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Loans Securitized 2007 [Member] | Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Loans Securitized 2007 [Member] | Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Loans Securitized 2007 [Member] | Non-conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	13,630
Loans Securitized 2007 [Member] | Non Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	856
Loans Securitized 2007 [Member] | Non Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	7,764
Loans Securitized 2007 [Member] | Non Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	5,010
Loans Securitized 2007 [Member] | Other Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Loans Unsecuritized [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	14,119
Loans Unsecuritized [Member] | Chattel Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	2,796
Loans Unsecuritized [Member] | Chattel Loans Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	915
Loans Unsecuritized [Member] | Chattel Loans Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	1,148
Loans Unsecuritized [Member] | Chattel Loans Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	733
Loans Unsecuritized [Member] | Conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	1,873
Loans Unsecuritized [Member] | Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	309
Loans Unsecuritized [Member] | Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	1,457
Loans Unsecuritized [Member] | Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	107
Loans Unsecuritized [Member] | Non-conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	9,433
Loans Unsecuritized [Member] | Non Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	2,682
Loans Unsecuritized [Member] | Non Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	5,207
Loans Unsecuritized [Member] | Non Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	1,544
Loans Unsecuritized [Member] | Other Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	17
Construction Advances [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	3,952
Construction Advances [Member] | Chattel Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Construction Advances [Member] | Chattel Loans Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Construction Advances [Member] | Chattel Loans Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Construction Advances [Member] | Chattel Loans Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Construction Advances [Member] | Conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	3,952
Construction Advances [Member] | Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Construction Advances [Member] | Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	2,805
Construction Advances [Member] | Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	1,147
Construction Advances [Member] | Non-conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Construction Advances [Member] | Non Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Construction Advances [Member] | Non Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Construction Advances [Member] | Non Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Construction Advances [Member] | Other Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Consumer Loans Held For Sale [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	5,555
Consumer Loans Held For Sale [Member] | Chattel Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Consumer Loans Held For Sale [Member] | Chattel Loans Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Consumer Loans Held For Sale [Member] | Chattel Loans Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Consumer Loans Held For Sale [Member] | Chattel Loans Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Consumer Loans Held For Sale [Member] | Conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	5,555
Consumer Loans Held For Sale [Member] | Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	0
Consumer Loans Held For Sale [Member] | Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	2,578
Consumer Loans Held For Sale [Member] | Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable	2,977
Consumer Loans Held For Sale [Member] | Non-conforming Mortgages [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Consumer Loans Held For Sale [Member] | Non Conforming Mortgages Range One [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Consumer Loans Held For Sale [Member] | Non Conforming Mortgages Range Two [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Consumer Loans Held For Sale [Member] | Non Conforming Mortgages Range Three [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable
Consumer Loans Held For Sale [Member] | Other Loans [Member]
Loans and Leases Receivable, Gross, Consumer [Abstract]
Consumer loans receivable